Description
Students can separate and grade soil and rock samples to determine the make-up of soil strata. 1 each of holes per square inch size 5, 10, 35, 60, 120, 230. Includes bottom pan and lid with teacher’s guide. Dia. 16.5cm. Set of 6.
Students can separate and grade soil and rock samples to determine the make-up of soil strata. 1 each of holes per square inch size 5, 10, 35, 60, 120, 230. Includes bottom pan and lid with teacher’s guide. Dia. 16.5cm. Set of 6.